[mdanielson]

I'm pretty well-versed in the world of 123, but i'm trying to figure out 124. I love my 92 300te, but a few things are baffling.
When closing the sunroof (pushing switch forward), it closes, then pops up to vent. When i pull down on the switch to close it, it just continues to try to rise. When it's closed, i can either push up on the switch, or pull down on it. eith way, it rises. I'm having to close it by sliding it open, then sliding it closed and just letting go of the switch in that split-second when it's in between slide and vent.
i bought a switch from a boneyard, and it does the same thing- i was very let-down.
anyway, anybody had this problem? any chance at all that two switches could be malfunctioning in the same way? thanks-mick

 

[christopher1959]

There is a aprox. 1" by 2.5" black relay mounted on the bottom of the sunroof motor mounting bracket behind the spare wheel cover in the left rear for the car...most likely your problem, Good luck.

 

[mdanielson]

wow-sounds easy- and there's one 300te in the junkyard. wonder where the relay is housed on sedans-there are plenty of those there? (assuming they have the same thing). While you're wearing your thinking cap... my other disappointment that day was that i got the dash switch for the rear interior lights out of that same car. mine will turn the lights on, both back seat and tailgate lights, but the setting for them to turn on when the rear doors or tailgate is opened does not work. you have to toggle them on from the dash. so, i got this seemingly precious switch out of the only te in the junkyard, and the same things happens. mean anything to you?

 

[spanners]

I'm pretty well-versed in the world of 123, but i'm trying to figure out 124. I love my 92 300te, but a few things are baffling.
When closing the sunroof (pushing switch forward), it closes, then pops up to vent. When i pull down on the switch to close it, it just continues to try to rise. When it's closed, i can either push up on the switch, or pull down on it. eith way, it rises. I'm having to close it by sliding it open, then sliding it closed and just letting go of the switch in that split-second when it's in between slide and vent.
i bought a switch from a boneyard, and it does the same thing- i was very let-down.
anyway, anybody had this problem? any chance at all that two switches could be malfunctioning in the same way? thanks-mick

It sounds like the motor needs resetting. Check out this post http://www.benzworld.org/forums/w126-s-se-sec-sel-sd/1193701-malfunctioning-sunroof-switch.html

The post is a few years old and is in the W126 forum but the sunroof system is exactly the same. Read the first few posts as there are some further tips to my original instructions that will assist.

Good luck.

 

[mckellyb]

Yep, sounds like the cable is out-of-synch with the roof's position.

I did this on my 126, and have did it on the 124, but it wasn't the problem.

Here's a tip, wear gloves when turning the knob.

 

[Bombo101]

http://www.benzworld.org/forums/2043827-post11.html

 

[mdanielson]

brilliant advice. just got around to doing this, and the sunroof works beautifully. this also means i can now make use of the key in the door to close the windows and sunroof (before, it would close the windows, but open the sunroof). thanks to you and the others. on to something else now!

 

[redwood]

this is very common when switch and or relay fails. thankfully it is not the motor itself that is failing.